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ADI LT8641EUDC#PBF product image
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ADI LT8641EUDC#PBFRoHS

Fabricante
ADI
N.º de pieza fab.
LT8641EUDC#PBF
Nº LCSC
C674128
Emb.
QFN-18(3x4)
Número de Cliente
Atrib. clave
65V, 3.5A Synchronous Step-Down Silent Switcher with 2.5uA Quiescent Current
Hoja de Datospdf iconADI LT8641EUDC#PBF
En stock: 47
47 En stock, envío inmediato
Mínimo: 1Múltiplo: 1Unidad de venta: Piece
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Cant.Prec. unit.Importo total
1+$ 10.5928$ 10.59
10+$ 9.2429$ 92.43
30+$ 8.4199$ 252.60
100+$ 7.7287$ 772.87
Encapsulado Estándar91/Full Tube
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Especificaciones del Producto

Todo
TipoDescripción
CategoríaIntegrated Circuits (ICs)/Power Management (PMIC)/Voltage Regulators - DC DC Switching Regulators
FabricanteADI
Emb.QFN-18(3x4)
Operating Temperature-40℃~+125℃@(TJ)
Frequency - Switching200kHz~3MHz
FunctionStep-down type
Number of Outputs1
FeaturesEMI optimization (spread spectrum);Frequency synchronization;Light load efficient mode;Adjustable soft-start;Output voltage tracking;Operating status indication
Output TypeAdjustable
TopologyBuck
Operating Voltage3V~65V
Switch tube (built-in/external)Built-in
Output Voltage-
Output Current3.5A
Quiescent Current2.5uA
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Descripción

Traducción por IA

The LT8641 step-down regulator features Silent Switcher architecture designed to minimize EMI emissions while delivering high efficiency at frequencies up to 3MHz. Assembled in a 3mm × 4mm QFN, the monolithic construction with integrated power switches and inclusion of all necessary circuitry yields a solution with a minimal PCB footprint. An ultralow 2.5µA quiescent current—with the output in full regulation—enables applications requiring highest efficiency at very small load currents. Transient response remains excellent and output voltage ripple is below 10mVP-P at any load, from zero to full current. The LT8641 allows high VIN to low VOUT conversion at high frequency with a fast minimum top switch ontime of 35ns. Operation is safe in overload even with a saturated inductor. Essential features are included and easy to use: An opendrain PG pin signals when the output is in regulation. The SYNC/MODE pin selects between Burst Mode, pulseskipping, or spread spectrum mode, and also allows synchronization to an external clock. Soft-start and tracking functionality is accessed via the TR/SS pin. An accurate enable threshold can be set using the EN/UV pin and a resistor at the RT pin programs switch frequency.

Características

Traducción por IA
  • Silent Switcher Architecture
  • Ultralow EMI Emissions Spread Spectrum Frequency Modulation
  • High Efficiency at High Frequency: Up to 95% Efficiency at 1MHz, 12VIN to 5VOUT; Up to 94% Efficiency at 2MHz, 12VIN to 5VOUT
  • Wide Input Voltage Range: 3V to 65V
  • 3.5A Maximum Continuous Output
  • 5A Peak Transient Output
  • Ultralow Quiescent Current Burst Mode Operation: 2.5µA I0 Regulating 12VIN to 3.3VOUT, Output Ripple < 10mVP-P
  • Fast Minimum Switch On-Time: 35ns
  • Low Dropout Under All Conditions: 130mV at 1A
  • Safely Tolerates Inductor Saturation in Overload
  • Adjustable and Synchronizable: 200kHz to 3MHz
  • Peak Current Mode Operation
  • Output Soft-Start and Tracking
  • Small 18-Lead 3mm × 4mm QFN
  • AEC-Q100 Qualified for Automotive Applications

Aplicaciones

Traducción por IA
  • Automotive and Industrial Supplies
  • General Purpose Step-Down
  • GSM Power Supplies